Thinning my collection! 1976, runs great. 35 mm case, 18 mm lug width, strap included. Small chip in side of crystal at 2 o'clock but does not go through to the dial. Asking $450 conus. Prefer zelle, open to options since first post here. I didn't send it off to Longines to authenticate but they keep great records and gave me some info on the watch which I can forward to buyer. In short: " the serial number 17'280'231 identifies a wristwatch in stainless steel bearing the reference 1571, part of the Conquest collection. It is fitted with a mechanical self-winding movement, caliber 633. It was invoiced in 1976 to the company Longines Japan, which was at that time our subsidiary for Japan."